This specific 3D model, "3D model of a box for a gas cylinder 3D model 5", is an asset made available by "Unknown author".
Download this asset at "Unknown platform" by following the link.
Usage of this 3d asset is subject to the "Unknown license" agreement.
BLEND (Blender, filesize: 18 MB), FBX (Autodesk FBX, filesize: 18 MB)